in many complex project bidding activities, the tenderer must specify the technical requirements of the bidding project in the bidding documents in order to facilitate the bidders to prepare bidding documents and make bidding quotations.

however, because the tenderee only knows the specific needs of his own bidding project, he doesn't know the latest technical development and optimal solutions of this kind of bidding project. Therefore, in order to maximize the interests of the tenderer, the tender documents require bidders to further optimize the technical scheme on the basis of the tender documents, which is called "bidding optimization scheme".

Reference: Professional Dictionary for Bidding /index.php? doc-view-155